Report says: Apple Watch is learning to track your blood sugar.

Apple CEO Tim Cook is testing out a glucose monitor for the Apple Watch, according to a report.

Apple CEO Tim Cook is working on a glucose monitor for the Apple Watch, according to a CNBC report. Cook has reportedly been seen testing out a blood sugar tracker paired to his Apple Watch on Apple’s campus.

In a previous report, CNBC said Apple employees were testing out small sensors to continuously monitor glucose for diabetes patients.

This isn’t the first time Apple has been in the news for offering possible alternatives to invasive diagnostic tests. Last week, the University of California, San Francisco shared the results of a major study, which suggested the Apple Watch can help diagnose potentially fatal heart problems.